html {
  background-color: #000;
  color: #888;
  /* font-family: 微软雅黑, 宋体, sans-serif; */
}

pre {
  border: 1px solid #2b2b2b;
  margin: 0;
  padding: .5em;
  background-color: #001;
  line-height: 1.5em
}

a {
  color: #880;
  text-decoration: none;
}

a:focus {
  color: #881;
}

a:hover {
  text-decoration: underline;
}